Umbo
noun, plural umbones
[uhm-boh-neez] /ʌmˈboʊ niz/ (Show IPA), umbos.
1.
a boss on a shield, as one at the center of a circular shield.
2.
any similar boss or protuberance.
3.
Zoology. the beak of a bivalve shell; the protuberance of each valve above the hinge.
4.
Anatomy. the depressed area on the outer surface of the tympanic membrane.
5.
a blunt or rounded protuberance arising from a surface, as on a pine cone scale.
noun (pl) umbones (ʌmˈbəʊniːz), umbos
1.
a small hump projecting from the centre of the cap in certain mushrooms
2.
a hooked prominence occurring at the apex of each half of the shell of a bivalve mollusc
3.
(anatomy) the slightly convex area at the centre of the outer surface of the eardrum, where the malleus is attached on the internal surface
4.
a large projecting central boss on a shield, esp on a Saxon shield
umbo um·bo (ŭm’bō)
n. pl. um·bos or um·bo·nes (ŭm-bō’nēz)
A small anatomical projection on a surface, such as that on the inner surface of the tympanic membrane at the end of the manubrium of the malleus, corresponding to the most depressed point of the membrane.
um’bo·nal (ŭm’bə-nəl, ŭm-bō’nəl) or um·bon’ic (ŭm-bŏn’ĭk) adj.
Read Also:
- Umbonal
adjective 1. having the shape or appearance of an umbo; bosslike: an umbonal structure. 2. of, relating to, or near the umbo: the umbonal region.
- Umbonate
adjective 1. having an umbo or projecting boss. 2. shaped like an umbo; having a rounded convex form: an umbonate fungus.
- Umbra
noun, plural umbras, umbrae [uhm-bree] /ˈʌm bri/ (Show IPA) 1. shade; shadow. 2. the invariable or characteristic accompaniment or companion of a person or thing. 3. Astronomy. the complete or perfect shadow of an opaque body, as a planet, where the direct light from the source of illumination is completely cut off. Compare penumbra (def […]
- Umbrae
noun, plural umbras, umbrae [uhm-bree] /ˈʌm bri/ (Show IPA) 1. shade; shadow. 2. the invariable or characteristic accompaniment or companion of a person or thing. 3. Astronomy. the complete or perfect shadow of an opaque body, as a planet, where the direct light from the source of illumination is completely cut off. Compare penumbra (def […]
- Umbrage
noun 1. offense; annoyance; displeasure: to feel umbrage at a social snub; to give umbrage to someone; to take umbrage at someone’s rudeness. 2. the slightest indication or vaguest feeling of suspicion, doubt, hostility, or the like. 3. leaves that afford shade, as the foliage of trees. 4. shade or shadows, as cast by trees. […]